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Emissions from road dust suspension depend on a vehicle's speed, size, shape, porosity, amount of dust on road surfaces, and weather conditions. Considerable uncertainty remains regarding the amount of PM emitted by non-exhaust sources in real-world driving conditions and how this amount varies with the abovementioned factors. [14]
Tire wear is a major source of rubber pollution. [4] [5] [6] A concern is that, unlike exhaust emissions, vehicle tire wear pollution is not regulated. [6]Some devices are nonetheless being developed in an effort to reduce the amount of particulates coming from the tire and otherwise ending up in the atmosphere.
Occupational dust exposure occurs when small particles are generated at the workplace through the disturbance/agitation of rock/mineral, dry grain, timber, fiber, or other material. When these small particles become suspended in the air, they can pose a risk to the health of those who breath in the contaminated air.
Public health authorities generally recommend against inhaling brake dust, [3] chrysotile has been banned in many developed countries, such as Australia in late 2003, [4] and chrysotile has been progressively replaced in most brake linings and pads by other fibers such as the synthetic aramids. Most countries in the world now prohibit the use ...
Brake cleaner, often also called parts cleaner, is a mostly colorless cleaning agent, mainly used for cleaning the brake disks, the engine compartment and underfloor of motor vehicles. An important feature is that the brake cleaner leaves no residue after the solvents evaporate .
It is a field of study within occupational safety and health and public health. [3] Short term risks may include physical injury (e.g., eye, back, head, etc.), while long-term risks may be an increased risk of developing occupational disease , such as cancer or heart disease .
However, as the serious health-related hazards of asbestos eventually started to become apparent, other materials had to be found. Asbestos brake pads have largely been replaced by non-asbestos organic (NAO) materials in first world countries. [9] Today, brake pad materials are classified into one of four principal categories, as follows:
Health hazard/hazardous to the ozone layer (exclamation mark) Serious health hazard (cross on a human silhouette) Gas under pressure (gas cylinder) These pictographs are also subdivided into class and categories for each classification. [13] The assignments for each chemical depends on their type and their severity.